Houghton Mifflin Harcourt Publishing 401(k) and pension plans

Houghton Mifflin Harcourt Publishing Company, Boston, MA. EIN 04-1456030. Annual reports 2009–2024. Also filed as Houghton Mifflin Company; Houghton Mifflin Harcourt.

Houghton Mifflin Harcourt Publishing Company has 2 active retirement plans on file. The largest is the Houghton Mifflin 401(k) Savings Plan, with 4,879 participants and $644 million in assets in 2024. Fidelity has been its recordkeeper since 2009.

Active plans: 2
Participants: 7,452
Plan assets: $756 million
401(k) recordkeeper: Fidelity
Plans on file: 2
Industry: Information and media

All 2 plans

Active plans first

Houghton Mifflin 401(k) Savings Plan

401(k)Active

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 003Employer EIN 04-1456030
Participants (2024): 4,879
Net assets (2024): $644 million
Recordkeeper: Fidelity2009–2024
Plan administrator: Houghton Mifflin Investment Committee
125 High Street
Boston, MA 02110
(617) 351-5131As filed for 2024
In effect since: January 1, 1981

Earlier sponsor: Houghton Mifflin Company (2009–2015).

Earlier plan names: Houghton Mifflin 401K Savings Plan.

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	4,879	$644 million	Fidelity
2023	5,290	$583 million	Fidelity
2022	4,502	$479 million	Fidelity
2021	4,602	$620 million	Fidelity
2020	5,135	$587 million	Fidelity
2019	5,589	$543 million	Fidelity
2018	5,749	$453 million	Fidelity
2017	5,910	$497 million	Fidelity
2016	6,071	$431 million	Fidelity
2015	6,059	$401 million	Fidelity
2014	5,063	$386 million	Fidelity
2013	5,076	$371 million	Fidelity
2012	5,215	$328 million	Fidelity
2011	5,488	$309 million	Fidelity
2010	5,702	$322 million	Fidelity
2009	5,803	$309 million	Fidelity

Houghton Mifflin Retirement Plan

Cash balance pension, frozenActive

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 001Employer EIN 04-1456030
Participants (2024): 2,573
Net assets (2024): $112 million
Last listed administrator: Mercer2009–2018
Plan administrator: Retirement Committee of Houghton Mifflin Harcourt Publishing Company
125 High Street
Boston, MA 02110
(617) 351-5000As filed for 2024
In effect since: July 1, 1953

Earlier sponsors: Houghton Mifflin Company (2011–2013); Houghton Mifflin Harcourt (2014–2015).

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	2,573	$112 million	not listed
2023	2,631	$115 million	not listed
2022	2,696	$113 million	not listed
2021	2,761	$151 million	not listed
2020	2,891	$155 million	not listed
2019	3,007	$150 million	not listed
2018	3,104	$134 million	Mercer
2017	3,269	$153 million	Mercer
2016	3,377	$148 million	Mercer
2015	3,451	$150 million	Mercer
2014	3,532	$166 million	Mercer
2013	3,667	$159 million	Mercer
2012	3,749	$142 million	Mercer
2011	3,810	$126 million	Mercer
2010	3,872	$116 million	Mercer
2009	3,974	$104 million	Mercer

If you had money in one of these plans

Call Fidelity (fidelity.com), which runs the Houghton Mifflin 401(k) Savings Plan. With your Social Security number and the plan name, it can tell you whether you still have a balance and, if not, where it went.
Or call the plan administrator listed on the plan below ((617) 351-5131). That number was filed for 2024; ask for the benefits or retirement plan office.
Still stuck? The Department of Labor's benefits advisers help for free: askebsa.dol.gov or 1-866-444-3272. Never pay anyone to find your own money.

What these numbers are

They come from the Form 5500 annual reports each plan files with the Department of Labor, as the plan filed them. A plan year is usually a calendar year.
Participants counts everyone in the plan at year end: current employees, former employees who still have a balance or a pension coming, and retirees or beneficiaries being paid.
The recordkeeper is the service provider whose Schedule C entry says it keeps the plan's records. Small plans do not file Schedule C, so some plans show none.
We cannot see anyone's account. Only the plan or its recordkeeper can tell you your balance.

Sources: U.S. Department of Labor, Form 5500 datasets and PBGC trusteed plans. How we read them.

All 2 plans

Houghton Mifflin 401(k) Savings Plan

Houghton Mifflin Retirement Plan

If you had money in one of these plans

What these numbers are

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